+ These pressure sensors have three wires and sometimes a
+ shield around those wires. The colors of the wires can vary,
+ but typically are red for power, black for ground, and green
+ for the analog output. Hook red to '+5', green to 'PRES', and
+ black to one of the two 'GND' screws on the board. The other
+ 'GND' screw is available for connecting the shield if one is
+ present. This is mostly relevant if you're using the product
+ for static testing on the ground with a longer than usual
+ cable.
+